Fan-housing construction



Oct. 18, 1927.

C. E. SCOTT FAN HOUSING CONSTRUCTION Filed May 17. 1927 I wvmtoz dime-#0: 1 Sc 07;;

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Patented Oct. 18, 1927.

UNITED STATES v 1,646,319 PATENT OFFICE.

CLARENCE E. SCOTT, OENORRISTOWN, PENNSYLVANIA, ASSIGNOR T YORK HEATING AND VENTILATING CORPORATION, OF PHILADELPHIA, PENNSYLVANIA, COR- PORATION OF PENNSYLVANIA.

FAN-HOUSING CONSTRUCTION.

Application filed May 17,

The present invention relates to fan structures and more particularly to a fan-housing 1 it axially out of the fan and out of the fan housing. Often the unit in which the fan is mounted is so located with respect'to room; walls and other machines or equipment as to make it impossible, except' with great difficulty, to withdraw such shafts, and as a result the unit is obliged tobe out of use for a considerable period while repairs aremade.v

Some of the objects of the present invention are to provide an improved construction for fan housings, and casings, to provide means whereby a fan and its parts can be quickly and economically removed from its housing; to provide a structure whereby a fan assembly can be lifted out of its housing as a complete unitysuoh removal taking place in a plane intersecting the-axis of the fan shaft; to provide a fan housing having means for allowing the passage of a fan shaft in combination with'a closure struc ture for normally closing such means; and to provide other improvements as will hereinafter appear. g a

In the accompanying drawings,-Fig. 1 represents a plan of a blower unit embodying one form of the present invention; Fig. 2 represents a section online 22 of Fig. 1; Fig. 3 represents a section on line of Fig. 2; Fig. 4. represents a section on line 44 of Fig. 2; Fig. 5 represents a plan detail of one of the removal top plates; and Fig. 6 re resents a detail of the slot construction 1n the inlet case.

Referring to the drawings, one form of the present invention is shown as'applied to a casing 10' for a plurality of fans 11 mounted u on a commondriven shaft 12 which is suitably journal led upon the casing in any well known manner. The fans '11 are respectively confined in volute housings 13, having truncated inlets 14 at opposite; ends of each fan, these inlets being formed respectively in the side walls 15 of the housings. The top of each housing 13 1s left 1927. Serial No. 192,086.

open to provide discharge outlets 16 for the air or gas drawn through the casing 10 by the action of the fans 11. In the present embodiment of the invention, the casing 10 s that of a unitheater or heat diffusing means .WhelClIl air is drawn through the casing 10 in contact with a heated coil and then discharged into a room for heating purposes.

For the purpose of gaining access-to the fan shaft at all points in its length, the easinglO is providedwith a top plate 17 in the form of a strip running the length of the casing but of a width'to leave'plenty of space to allow the fans 11 to be removed without'interferencefrom this plate 17. As here shown, the plate 17 is fastened alon its outer edge to an angle 18 by bolts 19 and has 1ts inner edge. provided with support strips 20 which project between the respec-' tive fan housing walls and the end housing walls and the end of the casing 10. Preferably these strips 20 are spot welded to the plate 17 as an inexpensive and effective way of anchoring them. Each of these strips 20 forms a support for one end of one of a number of removable top sections 21, the other ends of which seat upon an an 1e iron 22 and are fastened by bolts 23. sections 21 respectively close the space between adjacent fan housing walls 15 and the space between each end housing wall 15 and its juxtaposed casing wall.

In order to provide for the removal of the shaft 12 and its assembled fan structure as a unit, slots 24 are cut in aligned axial relation in the housing walls 15 and open into like slots 25 cut in the truncated inlets 14. Preferably, the several slots 24 have an angular slant radially from the shaft 12, so that in removing the fan unit it will be properl guided to the openings 16. These series 0 slots 24 and 25 allow the shaft 12 with the fan assembly to be lifted bodily upward and outward through the portion of the top which is not closed by the plate 17.

For covering the s10ts.24 and 25, each of he'top j the top, plates 21 is provided with attached I interfitting engagement with the housing walls, and to thatend each has its side edges reversely turned as-shown at 28' to receive the like formed edges 30 of the slots 25. Thus each and removable top plate 21 will have one closure 26 and the intermediate re- Y movable top plates 21 will each have two closures 26. In conse uence,vwhen the top I plates 21 are fixed to t e casin 10, a complete unitary housing isprovi ed for the an assembly, and the only openings in the.

to arethe necessary discharge outlets -16.

en it is desired to remove the fan as sembly from the housings, it becomes a simple matter because upon taking out the fastening bolts 23, each-top plate 21 can be lifted 'to carry with it the closures 26 and 27, since these latter will slide out of the interfitting guides and thereby open the slots 24 "and 25- heretofore.

While only a single form is shown in i which this invention may be embodied, it

is to be understood that the invention is not limited to any specific construction, but might be a plied to various forms without departing rom the spirit of the inventionor the scope of the appended claims.

Having thus described my invention, I claim:

1. A' casing structure comprising a fan housing provided with an outlet, said housing having end walls provided respectively with inlets, a shaft assing through said inlets, a fan onsaid s aft, and means per mitting said shaft. and fan to be removed as a unit through said outlet.

2. A ca'singi structure com rising a fan housing provided with an out at, said housing having end walls, rovided respectively with inlets and slots mm the top edge of said walls and opening into said inlets, a shaft arranged to pass through said slots into journalled POSItlOll in said inlets, top plates removably secured respectively to said housing walls, and means carried b said plates for closing said slots, .where y the removal of said plates opens said slots to permit said shaft and fan to be removed as a unit through said outlet.

the practice top portion between the housings, and

3. A casing structure comprising a plurality of fan housings provided respectively with discharge outlets, the end walls of each housing being. spaced from the end wall of co the ad acent housing, said walls having axially aligned open ended slots, a plurality of fans, one for each housing, a shaft common to said fans and arranged to traverse said slots for removal purposes, removable top plates for closingthe respective spaced housing walls, and closures for said slots carried by said top plates, whereby the removal of said plates permits said fans andshafts' to be removed as a unit.

' 4. A casing structure comprising a plurality of fan housings provided with removable top plates, a plurality of fans re-v spectively in said housings, a shaft common to said fans, and means attached to said to 76 plates for opening a path for said she 1 through said housings, whereby the fans and a shaft can be removed as a unit from said housings.

5. A casing structure comprisinga cas- 80 mg having an open top port1on,a lurahty of fan housings spaced aparthn having discharge outlets opening into saidopen top portion, a plurality of fans respectively -lo-' cated in said housings, a shaft common to said fans journalled in said casing, the side walls of said housings having slots opening radially from said shaft, anda plurality of removable top plates normally cl osingrsaid closures depending from said plates for rei spectively closing said slots.

6. A casing structure comprising a cas ing having an open top portion, a plurality Y of fan housings spaced apart and having dis- 9! charge outlets openi'n into said open top portion, a pluralityo fans respectively 10-. cated in said housings, a shaft common to said fans journalledin said casing, the side walls of said housings having slots opening lfl radially from s'aidshaft, and a plurality. of removable top plates normallyvclosing said top portion betweenlthe housings, closures depending from said plates for respectively closing said slots, and inter-fitting slidable connections between each closure. and said housing walls respectively.

Signed at Norristown, county of Mont gomery, State of Pennsylvania, this 11th day of February, 1927.

CLARENGE a. score 

